Influenza Hemagglutinin's Membrane Interaction and Structure
Author Information
Author(s): Chang Ding-Kwo, Cheng Shu-Fang, Kantchev Eric Aseen B, Lin Chi-Hui, Liu Yu-Tsan
Primary Institution: Institute of Chemistry, Academia Sinica, Taipei, Taiwan
Hypothesis
There may not be an absolute sequence-specific requirement for the transmembrane domain (TMD) to interact with the fusion peptide (FP) in the fusion reaction.
Conclusion
The TMD oligomer anchors the fusion protein in the membrane with minimal destabilization, and its interaction with FP likely contributes to membrane fusion during the late phase of the fusion cascade.
Supporting Evidence
- The fluorescence and gel electrophoresis experiments revealed a tight self-assembly of TMD in the model membrane.
- A weak but non-random interaction between TMD and FP in the membrane was found.
- An infrared study exhibited an enhanced membrane perturbation by the complex formation.
Takeaway
This study looks at how a part of the influenza virus helps it fuse with cells, showing that it works together with another part to make this happen more effectively.
Methodology
Fluorescence and gel electrophoresis experiments were conducted to study the self-assembly and interaction of the TMD and FP in a model membrane.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website